CVE-2025-7837

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-7837
A vulnerability was found in TOTOLINK T6 4.1.5cu.748_B20211015 and classified as critical. Affected by this issue is the function recvSlaveStaInfo of the component MQTT Service. The manipulation of the argument dest leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md Exploit Third Party Advisory
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md#poc Exploit Third Party Advisory
https://vuldb.com/?ctiid.316940 Permissions Required
https://vuldb.com/?id.316940 Third Party Advisory VDB Entry
https://vuldb.com/?submit.617572 Third Party Advisory VDB Entry
https://www.totolink.net/ Product
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:totolink:t6_firmware:v4.1.5cu.748_b20211015:*:*:*:*:*:*:*
cpe:2.3:h:totolink:t6:3:*:*:*:*:*:*:*
History

23 Jul 2025, 16:43

Type Values Removed Values Added
CPE cpe:2.3:h:totolink:t6:3:*:*:*:*:*:*:*
cpe:2.3:o:totolink:t6_firmware:v4.1.5cu.748_b20211015:*:*:*:*:*:*:*
First Time Totolink t6
Totolink
Totolink t6 Firmware
References () https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md - () https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md - Exploit, Third Party Advisory
References () https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md#poc - () https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md#poc - Exploit, Third Party Advisory
References () https://vuldb.com/?ctiid.316940 - () https://vuldb.com/?ctiid.316940 - Permissions Required
References () https://vuldb.com/?id.316940 - () https://vuldb.com/?id.316940 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.617572 - () https://vuldb.com/?submit.617572 - Third Party Advisory, VDB Entry
References () https://www.totolink.net/ - () https://www.totolink.net/ - Product

22 Jul 2025, 13:06

Type Values Removed Values Added
Summary
  • (es) Se encontró una vulnerabilidad en TOTOLINK T6 4.1.5cu.748_B20211015, clasificada como crítica. Este problema afecta a la función recvSlaveStaInfo del componente MQTT Service. La manipulación del argumento dest provoca un desbordamiento del búfer. El ataque puede ejecutarse en remoto. Se ha hecho público el exploit y puede que sea utilizado.

19 Jul 2025, 17:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-07-19 17:15

Updated : 2025-07-23 16:43

NVD link : CVE-2025-7837

Mitre link : CVE-2025-7837

CVE.ORG link : CVE-2025-7837

JSON object : View

Products Affected

totolink

  • t6
  • t6_firmware
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')